PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/23-00:58:00
G10     241.6          19.9               11.9 +/-    1.13      26.1 +/-    1.13  0.040 / 0.060
G13     64.7           33.8                8.0 +/-    0.62      13.0 +/-    0.62  0.050 / 0.070
G15     107.9          56.4               11.1 +/-    0.30      13.0 +/-    0.30  0.090 / 0.180
G16     308.0          14.0                5.8 +/-    1.60      14.7 +/-    1.60  0.090 / 0.160
G20     256.4          43.0               10.4 +/-    1.95      14.5 +/-    1.95  0.110 / 0.310
G21     321.6          52.2               10.7 +/-    1.25      13.1 +/-    1.25  0.200 / 0.360
G26     280.1          18.8                8.0 +/-    0.87      18.1 +/-    0.87  0.070 / 0.130
G29     157.9          61.3               10.3 +/-    0.51      11.6 +/-    0.51  0.060 / 0.140